arch/arm/mach-omap1/clock.h

   1 /*
   2  *  linux/arch/arm/mach-omap1/clock.h
   3  *
   4  *  Copyright (C) 2004 - 2005, 2009 Nokia corporation
   5  *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
   6  *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #ifndef __ARCH_ARM_MACH_OMAP1_CLOCK_H
  14 #define __ARCH_ARM_MACH_OMAP1_CLOCK_H
  15
  16 #include <linux/clk.h>
  17
  18 #include <plat/clock.h>
  19
  20 extern int __init omap1_clk_init(void);
  21 extern int omap1_clk_enable(struct clk *clk);
  22 extern void omap1_clk_disable(struct clk *clk);
  23 extern long omap1_clk_round_rate(struct clk *clk, unsigned long rate);
  24 extern int omap1_clk_set_rate(struct clk *clk, unsigned long rate);
  25 extern unsigned long omap1_ckctl_recalc(struct clk *clk);
  26 extern int omap1_set_sossi_rate(struct clk *clk, unsigned long rate);
  27 extern unsigned long omap1_sossi_recalc(struct clk *clk);
  28 extern unsigned long omap1_ckctl_recalc_dsp_domain(struct clk *clk);
  29 extern int omap1_clk_set_rate_dsp_domain(struct clk *clk, unsigned long rate);
  30 extern int omap1_set_uart_rate(struct clk *clk, unsigned long rate);
  31 extern unsigned long omap1_uart_recalc(struct clk *clk);
  32 extern int omap1_set_ext_clk_rate(struct clk *clk, unsigned long rate);
  33 extern long omap1_round_ext_clk_rate(struct clk *clk, unsigned long rate);
  34 extern void omap1_init_ext_clk(struct clk *clk);
  35 extern int omap1_select_table_rate(struct clk *clk, unsigned long rate);
  36 extern long omap1_round_to_table_rate(struct clk *clk, unsigned long rate);
  37 extern int omap1_clk_set_rate_ckctl_arm(struct clk *clk, unsigned long rate);
  38 extern long omap1_clk_round_rate_ckctl_arm(struct clk *clk, unsigned long rate);
  39 extern unsigned long omap1_watchdog_recalc(struct clk *clk);
  40
  41 #ifdef CONFIG_OMAP_RESET_CLOCKS
  42 extern void __init omap1_clk_disable_unused(struct clk *clk);
  43 #else
  44 #define omap1_clk_disable_unused        NULL
  45 #endif
  46
  47 struct uart_clk {
  48         struct clk      clk;
  49         unsigned long   sysc_addr;
  50 };
  51
  52 /* Provide a method for preventing idling some ARM IDLECT clocks */
  53 struct arm_idlect1_clk {
  54         struct clk      clk;
  55         unsigned long   no_idle_count;
  56         __u8            idlect_shift;
  57 };
  58
  59 /* ARM_CKCTL bit shifts */
  60 #define CKCTL_PERDIV_OFFSET     0
  61 #define CKCTL_LCDDIV_OFFSET     2
  62 #define CKCTL_ARMDIV_OFFSET     4
  63 #define CKCTL_DSPDIV_OFFSET     6
  64 #define CKCTL_TCDIV_OFFSET      8
  65 #define CKCTL_DSPMMUDIV_OFFSET  10
  66 /*#define ARM_TIMXO             12*/
  67 #define EN_DSPCK                13
  68 /*#define ARM_INTHCK_SEL        14*/ /* Divide-by-2 for mpu inth_ck */
  69 /* DSP_CKCTL bit shifts */
  70 #define CKCTL_DSPPERDIV_OFFSET  0
  71
  72 /* ARM_IDLECT2 bit shifts */
  73 #define EN_WDTCK        0
  74 #define EN_XORPCK       1
  75 #define EN_PERCK        2
  76 #define EN_LCDCK        3
  77 #define EN_LBCK         4 /* Not on 1610/1710 */
  78 /*#define EN_HSABCK     5*/
  79 #define EN_APICK        6
  80 #define EN_TIMCK        7
  81 #define DMACK_REQ       8
  82 #define EN_GPIOCK       9 /* Not on 1610/1710 */
  83 /*#define EN_LBFREECK   10*/
  84 #define EN_CKOUT_ARM    11
  85
  86 /* ARM_IDLECT3 bit shifts */
  87 #define EN_OCPI_CK      0
  88 #define EN_TC1_CK       2
  89 #define EN_TC2_CK       4
  90
  91 /* DSP_IDLECT2 bit shifts (0,1,2 are same as for ARM_IDLECT2) */
  92 #define EN_DSPTIMCK     5
  93
  94 /* Various register defines for clock controls scattered around OMAP chip */
  95 #define SDW_MCLK_INV_BIT        2       /* In ULPD_CLKC_CTRL */
  96 #define USB_MCLK_EN_BIT         4       /* In ULPD_CLKC_CTRL */
  97 #define USB_HOST_HHC_UHOST_EN   9       /* In MOD_CONF_CTRL_0 */
  98 #define SWD_ULPD_PLL_CLK_REQ    1       /* In SWD_CLK_DIV_CTRL_SEL */
  99 #define COM_ULPD_PLL_CLK_REQ    1       /* In COM_CLK_DIV_CTRL_SEL */
 100 #define SWD_CLK_DIV_CTRL_SEL    0xfffe0874
 101 #define COM_CLK_DIV_CTRL_SEL    0xfffe0878
 102 #define SOFT_REQ_REG            0xfffe0834
 103 #define SOFT_REQ_REG2           0xfffe0880
 104
 105 extern __u32 arm_idlect1_mask;
 106 extern struct clk *api_ck_p, *ck_dpll1_p, *ck_ref_p;
 107
 108 extern const struct clkops clkops_dspck;
 109 extern const struct clkops clkops_dummy;
 110 extern const struct clkops clkops_uart;
 111 extern const struct clkops clkops_generic;
 112
 113 #endif